Improvement in apparatus for washing gases



D. N. JONES. Apparatus for Washing Gases. No. 204,577.

Patented June 4, I878.

NFETEHS, PHOTO LITHO UNITED STATES PATENT OFFICE.

DANIEL N. JONES, OF JOHN STOWN PENNSYLVANIA, ASSIGNOR OF ONE- HALF HISRIGHT TO OAMBRIA IRON COMPANY.

IMPROVEMENT IN APPARATUS FOR WASHING GASES.

Specification forming part of Letters Patent No. 204,577, dated J une 4,1878; application filed October 6, 1877.

To all whom it may concern.-

Be it known that I, DANIEL N. JoNEs, of J ohnstown, in the county ofOambria and State of Pennsylvania, have invented certain Improvements inApparatus for Washing Gases, of which the following is a specification:

The object of my invention is to purify the waste gases from blast andother furnaces from dust and other substances contained therein, which Ieffect by bringing them in contact with water, as hereinafter described.

In the accompanying drawing the figure shows a vertical transversesection of the apparatus invented by me.

A in the figure represents the gas-conduit pipe leading down from thetop of the furnace or gas-generator. The lower end of this pipe projectssix or more feet into the washing-tub B. By preference I make this tub Bcylindrical, out of wrought-iron, and let the pipe A enter iteccentrically, as shown in the figure. The top of the washing-tub Bcloses upon the pipe A, and close to the top of the tub Bis thedischarge-pipe 0, through which the gases, after having been washed, aredrawn off, to be used for heating or other purposes needed. Within andat the top of the washing-tub B are fastened pipes D, which are keptsupplied with water from the outside. These pipes D are suitablyperforated with small holes, through which sprays of water escape in anupward direction, coming in contact with the top of the washing-tub orsome other obstruction, which causes 'the water to be finely divided orbroken up, so that in falling to the bottom of the tub through theascending gases the descending water and ascending gases are broughtmore thoroughly into contact with each other. The water collecting inthe bottom of the tub B flows off through the siphonshaped overflow-pipeE, the horizontal leg of which is always submerged.

By lengthening or shortening the vertical leg of the overflow-pipe E thelevel of the water in the bottom of the washing-tub may be raised orlowered, as desired.

From the bottom of the washing-tub B leads the drain-pipe F, closed by avalve, G, through which the water and dirt collected at the bottom ofthe tub may be drawn oil at proper in tervals of time.

The operation of this apparatus is as follows: The gas, passing throughthe conduitpipe A and entering into the washing-tub B in the directionof the arrows, is first forced to pass over the surface of the watercollected in the bottom of the washing-tub B, and then rises through aspray of falling water to pass out through the discharge-pipe G. Thedust mechanically carried along with the gases is thus moistened andfalls to the bottom of the tub, where it collects with the water in theshape of mud, and can readily be drawn off by means of the pipe F andvalve Gr. At the same time the water will absorb any ammonia andcarbonic acid contained in the gases, and thus increase their value forheating purposes.

The height to which the water is collected in the bottom of thewashing-tub depends upon circumstances, and can be readily adjusted bychanging the vertical legof the overflow-pipe E.

My invention will have the most utility when applied to the washing ofwaste gases from blast-furnaces, which carry a large amount of dust, asis shown not only by the improved combustion of the waste gases, butalso by the amount of dirt collected in the drain-pipe F, which is foundin practice to be very large.

I am aware that gases from blast-furnaces have been purified by passingthem over water, and do not claim this.

I am also aware that the process of washing and purifying gas by passingit through sprays of water is old, and that perforated spraypipes inapparatus for Washing gas are also old, and I therefore make no claim tosuch process and apparatus, broadly.

I claim as my invention- The combination and arrangement of thegas-conduit pipe A, washing-tub B, and gas discharge pipe 0 withspraypipes D and waste-pipes E and F, substantially as and for thepurpose hereinbefore set forth.

DANIEL N. JONES.

Witnesses CYRUS ELDER, DAVID PEELoR.

